Methylnaltrexone Bromide Impurity 13 CAS CATO-C4X-152113
| CAS No. | CATO-C4X-152113 |
| Molecular Formula | C21H24NO4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Methylnaltrexone Bromide Impurity 13 is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Methylnaltrexone Bromide Impurity 13 (CAS CATO-C4X-152113, C21H24NO4Br) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Methylnaltrexone Bromide Impurity 13 (C21H24NO4Br) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Methylnaltrexone Bromide Impurity 13 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C21H24NO4 Br |
| Molecular Weight | 434.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Methylnaltrexone Standards
- Methylnaltrexone Bromide Impurity 4 (CAS 1005410-32-1)
- Methylnaltrexone Bromide Impurity 1 (CAS 1027638-96-5)
- Methylnaltrexone Bromide - API Standards (CAS 916055-92-0)
- Methylnaltrexone (CAS 916055-93-1)
- Methylnaltrexone Bromide Impurity 25 (CAS CATO-C4X-147525)
- Methylnaltrexone Bromide Impurity 10 (CAS CATO-C4X-152110)
- Methylnaltrexone Bromide Impurity 11 (CAS CATO-C4X-152111)
- Methylnaltrexone Bromide Impurity 12 (CAS CATO-C4X-152112)
Recommended Standards
- Alprazolam Impurity 2 (CAS 4016-85-7)
- Gonadorelin impurity 3 (CAS CATO-C4X-23543)
- Upadacitinib Impurity 223 2HBr (CAS CATO-C4X-2405223)
- 5-Bromo-N-(isoxazol-3-yl)thiophene-2-sulfonamide (CAS 725215-59-8)
- Minoxidil Impurity 38 (CAS CATO-C4X-170038)
- 4-Cyclopropoxy-3-ethyl-5-(trifluoromethyl)pyridine (CAS 1243401-14-0)
- 2-Methyl-1-(pyridine-4-carbonyl)piperazine (CAS 1240581-82-1)
- 2,4-Difluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1412905-36-2)
- 4,4-Difluoro-1-isobutylcyclohexane-1-carboxylic acid (CAS 1380300-79-7)
- GnRH Associated Peptide (GAP) (1-13), human (CAS 100111-07-7)
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